
The percentages for well-known sources of tracking like Google, Facebook, and Adobe were roughly the same, but the list also included a significant number of analytics companies, such as comScore, Chartbeat, and Nielsen. With the Strict settings in place, Edge blocked a total of 739 trackers, or about two-thirds fewer than in the Balanced setting. You would think that a stricter set of criteria for blocking trackers would result in more items being blocked instead, the exact opposite was true. I was so startled by the results when I first tried this experiment that I ran all the tests a second time, with the same counterintuitive results. So, what happens when you kick the Tracking Prevention level up to the highest level, Strict? Perhaps not what you expect. There's also no obvious way to customize its actions or to replace the built-in lists with third-party alternatives. As a result, the implementation has a "black box" feel to it. Microsoft has yet to publish formal documentation for this feature.

And although it's aimed at the online advertising and tracking industries in general, my tests suggest that its effects are likely to be felt most directly by one company: Google. In this post I explain how it works and how it affects your browsing experience.

I've spent the past week looking closely at this feature. That's the same general principle behind Tracking Prevention in the new Edge, but the implementation is more usable and more sophisticated, with multiple Trust Protection Lists taking the place of a single TPL. Scared of the dark? You won't be if you get one of our favorite flashlights How to convert your home's old TV cabling into powerful Ethernet lines This company successfully switched to a four-day workweek. This tech CEO fired two engineers for having second full-time jobs, warns they're part of a new trend
